Vergence eye movements during figure-ground perception

•Eyes converge during figure-ground perception.•Vergence eye movements reflect figure-ground perception.•Vergence responses influence perceptual processing during a prolonged period.•Late (400–550 ms) vergence responses discriminate figure from ground. Figure-ground, that is the segmentation of visu...

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Bibliographic Details
Published in:Consciousness and cognition 2021-07, Vol.92, p.103138-103138, Article 103138
Main Authors: Solé Puig, Maria, Romeo, August, Supèr, Hans
Format: Article
Language:English
Subjects:
Attention
Convergence
Eye
Eye movements
Eye tracking
Fixational eye movements
Human
Perception
Pupil
Segmentation
Vergence eye movements
Visual perception
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Summary:•Eyes converge during figure-ground perception.•Vergence eye movements reflect figure-ground perception.•Vergence responses influence perceptual processing during a prolonged period.•Late (400–550 ms) vergence responses discriminate figure from ground. Figure-ground, that is the segmentation of visual information into objects and their surrounding backgrounds, provides structure for visual attention. Recent evidence shows a novel role of vergence eye movements in visual attention. In the present work, vergence responses during figure-ground segregation tasks are psychophysically investigated. We show that during a figure-ground detection task, subjects convergence their eyes. Vergence eye movements are larger in figure trials than in ground trials. In detected figures trials, vergence are stronger than in trials where the figure went unnoticed. Moreover in figure trials, vergence responses are stronger to low-contrast figures than to high-contrast figures. We argue that these discriminative vergence responses have a role in figure-ground.
ISSN:1053-8100
1090-2376
DOI:10.1016/j.concog.2021.103138